1212210020101 has 4 divisors (see below), whose sum is σ = 1212744742272. Its totient is φ = 1211675297932.

The previous prime is 1212210020059. The next prime is 1212210020117. The reversal of 1212210020101 is 1010200122121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1212210020101 - 2¹¹ = 1212210018053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212210020171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267357685 + ... + 267362218.

It is an arithmetic number, because the mean of its divisors is an integer number (303186185568).

Almost surely, 2^{1212210020101} is an apocalyptic number.

It is an amenable number.

1212210020101 is a deficient number, since it is larger than the sum of its proper divisors (534722171).

1212210020101 is an equidigital number, since it uses as much as digits as its factorization.

1212210020101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534722170.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1212210020101 its reverse (1010200122121), we get a palindrome (2222410142222).

The spelling of 1212210020101 in words is "one trillion, two hundred twelve billion, two hundred ten million, twenty thousand, one hundred one".